body {
    font-family: 'Roboto', sans-serif;
    background-color: #1c1c1c;
    color: #ecf0f1;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

a {
    color: #1abc9c;
    text-decoration: none;
}

a:hover {
    color: #16a085;
}

.el-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.el-header, .el-main {
    display: flex;
    align-items: center;
    justify-content: center;
}

.el-header {
    height: 60px;
}

.el-aside {
    width: 200px;
    padding: 0;
    display: flex;
    flex-direction: column; 
    align-items: flex-start; 
    justify-content: flex-start; 
}

.el-main {
    flex: 1;
    padding: 20px;
}

.el-menu-vertical-demo {
    width: 100%;
}

.el-menu-item {
    padding: 10px 20px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.el-menu-item:hover {
    background-color: #1abc9c;
    color: #fff;
}

.el-menu-item.is-active {
    background-color: #1abc9c;
    color: #fff;
}